Continuous cracking reaction system

Abstract

The utility model discloses a continuous cracking reaction system which comprises a material storage device, the output end of the storage device is connected with the input end of the gasifier through a first pipeline, and materials are heated to be gasified; the output end of the gasifier is connected with the reaction device through a second pipeline, and the materials are pyrolyzed and then output to a subsequent process; according to the continuous cracking system designed by the invention, the liquid tetrafluoroethyl methyl ether is cracked to prepare the difluoroacetyl fluoride, and the obtained difluoroacetyl fluoride is directly used for the next reaction, so that the difluoroacetyl fluoride can be used while being produced, the temporary storage amount of the difluoroacetyl fluoride in the workshop production process is reduced, and the workshop production is safer.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of chemical synthesis device especially relates to a continuous pyrolysis reaction system. BACKGROUND

[0002] Difluoroacetyl fluoride (DFVF) is an organic fluorine compound with the chemical formula C2HF3O. It is mainly used as an intermediate in pesticides and medicines. Here are some common uses of difluoroacetyl fluoride: 1. Pesticide intermediate: Difluoroacetyl fluoride is an important intermediate for the synthesis of some pesticides. It can be used to synthesize insecticides, fungicides and herbicides, etc. agricultural chemicals. 2. Pharmaceutical intermediate: Difluoroacetyl fluoride also has wide application in the field of medicine. It can be used as an intermediate for the synthesis of drugs, such as some antibiotics, antiviral drugs and anticancer drugs, etc. 3. Other chemical synthesis: Difluoroacetyl fluoride can also be used to synthesize other organic compounds, such as some specific organic synthesis reagents and catalysts.

[0003] Difluoroacetyl fluoride has high chemical activity and toxicity. During use and handling, relevant safety operating procedures need to be followed and appropriate protective measures need to be taken to protect the safety of personnel and the environment. However, at present, difluoroacetyl fluoride is stored in a steel cylinder after preparation, and needs to be transported during use. There is a risk of leakage during storage and transportation, which poses a safety hazard. UTILITY MODEL CONTENT

[0004] The utility model aims at solving the shortcomings in the prior art and provides a continuous pyrolysis reaction system.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a continuous pyrolysis reaction system, comprising:

[0006] A storage device;

[0007] The output end of the storage device is connected to the input end of the gasifier through a first pipeline to heat and raise the temperature of the material to gasification;

[0008] The output end of the gasifier is connected to the reaction device through a second pipeline to output the pyrolyzed material to the subsequent process.

[0009] As a further description of the above technical scheme: the storage device includes a storage tank, and at least one or more liquid level meters are arranged on the storage tank to monitor the material in the storage tank.

[0010] As a further description of the above technical scheme: the output end of the storage tank is provided with a discharge valve, the output end of the discharge valve is provided with a shut-off valve, and the output end of the shut-off valve is connected to the gasifier.

[0011] As a further description of the above technical solution: a metering pump is arranged between the cut-off valve on the first pipeline and the gasifier, and the flow of the material in the first pipeline is monitored through the metering pump.

[0012] As a further description of the above technical solution: a third pipeline is arranged on the gasifier, and the third pipeline is connected with a bottom port and a top port outside the gasifier to form a loop.

[0013] As a further description of the above technical solution: a first constant-temperature heating system is connected to the third pipeline.

[0014] As a further description of the above technical solution: a second constant-temperature heating system is arranged on the second pipeline.

[0015] As a further description of the above technical solution: the reaction device comprises a static reaction bed, and a third constant-temperature heating system is arranged on one side of the static reaction bed.

[0016] As a further description of the above technical solution: the storage tank is further provided with a fourth pipeline.

[0017] As a further description of the above technical solution: the material is liquid tetrafluoroethyl methyl ether, and difluoroacetyl fluoride is obtained after the material is cracked through the static reaction bed.

[0018] The above technical solution has the following advantages or beneficial effects:

[0019] The continuous cracking system designed in the application is used for cracking liquid tetrafluoroethyl methyl ether to prepare difluoroacetyl fluoride, the obtained difluoroacetyl fluoride is directly used for the next reaction, the production and use can be realized simultaneously, the temporary storage amount of difluoroacetyl fluoride in the workshop production process is reduced, and the workshop production is safer. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 The structural principle diagram of the continuous cracking system is provided for the utility model.

[0021] LEGEND:

[0022] 1, storage device; 11, storage tank; 12, liquid level meter; 13, discharge valve; 14, cut-off valve; 15, metering pump; 16, fourth pipeline; 2, first pipeline; 3, gasifier; 31, third pipeline; 32, first constant-temperature heating system; 4, second pipeline; 41, second constant-temperature heating system; 5, reaction device; 51, static reaction bed; 52, third constant-temperature heating system. DETAILED DESCRIPTION

[0023] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described, obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0024] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described, obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application. Figure 1 The present application provides an embodiment: a continuous cracking reaction system, comprising: a storage device 1; the output end of the storage device 1 is connected to the input end of the gasifier 3 through the first pipeline 2, and the material is heated to gasification; the output end of the gasifier 3 is connected to the reaction device 5 through the second pipeline 4, and the material is cracked and then output to the subsequent process.

[0025] In the present embodiment, liquid tetrafluoroethyl methyl ether is stored in the storage device 1, and then sequentially passes through the gasifier 3 and the reaction device 5 to be heated and cracked, so that difluoroacetyl fluoride is obtained, which can be directly used in the subsequent process, so that the production and use can be realized simultaneously, the temporary storage amount of difluoroacetyl fluoride in the workshop production process is reduced, and the workshop production is safer.

[0026] The storage device 1 comprises a storage tank 11, and at least one or more liquid level meters 12 are arranged on the storage tank 11 to monitor the material in the storage tank 11.

[0027] In the present embodiment, the inside of the storage tank 11 contains liquid tetrafluoroethyl methyl ether material, and a liquid level meter 12 is arranged on the outside of the storage tank 11 to display the remaining amount of the tetrafluoroethyl methyl ether material in the storage tank 11, so that the remaining amount can be grasped in real time, and the raw material can be supplemented in time to ensure the continuity of the reaction process.

[0028] The output end of the storage tank 11 is provided with a discharge valve 13, the output end of the discharge valve 13 is provided with a shut-off valve 14, and the output end of the shut-off valve 14 is connected to the gasifier 3.

[0029] In the present embodiment, a discharge valve 13 is arranged at the bottom of the storage tank 11, and the discharge valve 13 is used to control the delivery of the tetrafluoroethyl methyl ether material in the storage tank 11; and the shut-off valve 14 is used to quickly cut off the material delivery in an emergency.

[0030] Specifically, a metering pump 15 is arranged between the shut-off valve 14 on the first pipeline 2 and the gasifier 3, and the metering pump 15 is used to monitor the flow of the material in the first pipeline 2.

[0031] In the present embodiment, the metering pump 15 is used to control the delivery speed of the tetrafluoroethyl methyl ether, and the opening degree of the discharge valve 13 is adjusted according to the monitoring data of the metering pump 15 to control the delivery speed.

[0032] The third pipeline 31 is arranged on the gasifier 3, and the third pipeline 31 is connected with the bottom port and the top port outside the gasifier 3 to form a loop; and the first constant-temperature heating system 32 is connected to the third pipeline 31.

[0033] In the embodiment, after the tetrafluoroethyl methyl ether is pumped into the gasifier 3 by the metering pump 15, the temperature of the gasifier 3 is raised to 140-150 DEG C by the first constant-temperature heating system 32, and the liquid tetrafluoroethyl methyl ether is changed into gaseous tetrafluoroethyl methyl ether by the gasifier 3.

[0034] The second constant-temperature heating system 41 is arranged on the second pipeline 4.

[0035] In the embodiment, the gaseous tetrafluoroethyl methyl ether enters the static reaction bed 51 of the reaction device 5 through the second pipeline 4, the second pipeline 4 is preheated by the second constant-temperature heating system 41, and the temperature is controlled to be 140-150 DEG C to prevent the gaseous tetrafluoroethyl methyl ether from being cooled into liquid.

[0036] The reaction device 5 comprises the static reaction bed 51, and the third constant-temperature heating system 52 is arranged on one side of the static reaction bed 51.

[0037] In the embodiment, the static reaction bed 31 is preheated by the third constant-temperature heating system 52, and the temperature is controlled to be 150-160 DEG C; after the gaseous tetrafluoroethyl methyl ether enters the static reaction bed 31, the gaseous tetrafluoroethyl methyl ether can be quickly heated to the reaction temperature to perform the cracking reaction, so that difluoroacetyl fluoride is obtained and is delivered out; and the constant-temperature system is designed to ensure the stability of the gasification process and the cracking reaction process.

[0038] The storage tank 11 is further provided with the fourth pipeline 16.

[0039] In the embodiment, the unreacted material is delivered to the tail gas absorption process through the fourth pipeline 16.

[0040] Finally, it should be noted that the above only describes the preferred embodiments of the utility model, and is not used to limit the utility model, although the utility model is described in detail with reference to the foregoing embodiments, for those skilled in the art, the technical scheme recorded in the foregoing embodiments can be modified, or some technical features can be replaced equivalently, and any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A continuous cleavage reaction system characterized in that, Include: The storage device (1); The output end of the storage device (1) is connected with the input end of the gasifier (3) through the first pipeline (2), and the material is heated to gasification; The output end of the gasifier (3) is connected with the reaction device (5) through the second pipeline (4), and the material is cracked and output to the subsequent process.

2. The continuous cleavage reaction system of claim 1, wherein: The storage device (1) includes a storage tank (11), and at least one or more liquid level meters (12) are arranged on the storage tank (11) to monitor the material in the storage tank (11).

3. The continuous cleavage reaction system of claim 2, wherein: The output end of the storage tank (11) is provided with a discharge valve (13), the output end of the discharge valve (13) is provided with a cut-off valve (14), and the output end of the cut-off valve (14) is connected with the gasifier (3).

4. The continuous cleavage reaction system of claim 1, wherein: A metering pump (15) is arranged between the cut-off valve (14) on the first pipeline (2) and the gasifier (3), and the flow of the material in the first pipeline (2) is monitored by the metering pump (15).

5. The continuous cleavage reaction system of claim 1, wherein: The gasifier (3) is provided with a third pipeline (31), and the third pipeline (31) is connected with a bottom port and a top port outside the gasifier (3) to form a loop.

6. The continuous cleavage reaction system of claim 5, wherein: The third pipeline (31) is connected with a first constant temperature heating system (32).

7. The continuous cleavage reaction system of claim 1, wherein: The second pipeline (4) is provided with a second constant temperature heating system (41).

8. The continuous cleavage reaction system of claim 1, wherein: The reaction device (5) includes a static reaction bed (51), and one side of the static reaction bed (51) is provided with a third constant temperature heating system (52).

9. The continuous cleavage reaction system of claim 2, wherein: The storage tank (11) is also provided with a fourth pipeline (16).

10. The continuous cleavage reaction system of claim 8, wherein: The material is liquid tetrafluoroethyl methyl ether, and the material is cracked by the static reaction bed (51) to obtain difluoroacetyl fluoride.

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